Albert g



(No Model.) 4.* MGDANIEL y l LAMP. No. 444,278. PatentedJan. 6, 1891.

we mms mens :awww-JN0., WASHINGTON, o. c.

UNITED STATES PATENT OEEICE.

ALBERT G. MCDANIEL, OF HANNIBAL, MISSOURI.

LAlVi P.

SPECIFICATION forming part of Letters Patent No. 444,278, dated January6, 1891*.

l l Application filed April 8, 1890. Serial No. 347,073. (No model.)

To all whom it may concern:

Be it known that I, ALBERT G. MCDANTEL, a citizen of the United States,residing at Hannibal, in the county of Marion and State of Missouri,have invented certain new and useful Improvements in Lamps; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as vwill enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to improvements in illuminating apparatus, themain obj ect being to combine with an oil-reservoir one or more lampsthat will be fed by gravity from the said reservoir, and in which thewicks, while needing no adjustment, will be regularly and cquablysupplied with oil; and it consists in the construction, arrangement, andnovel combination of parts hereinafter described, illustrated in theaccompanying drawings, and pointed out in the claim hereto appended.

In the accompanying drawings, in which similar letters of referenceindicate similar parts, Figure l represents a side View of an apparatusembodying the invention. Fig. 2 represents a central vertical sectionthereof, but with some parts of the connecting-pipes unsectioned.

It must be premised that in this apparatus and that the wick is set atthe proper heightV in the wick tube or chamber and is not verticallyadjustable, the amount of light being regulated by the adjustment of thefeed to the wick.

Referring'to the drawings by letter, Adesignates a reservoir forcoal-oil, which is filled from the top through an opening d, that isclosed by a suitable cap or stopper., From the bottom of said reservoirdescends the main feed-pipe B, provided near its upper end with thestop-cock b, having a hand-wheel on its outer end, by means of which thefeed of oil from the reservoir may be increased or diminished, asdesired.

C is a coupling-piece connecting the upper and lower sections of thepipe B, and .provided with lateral arms c c, to which may be screwedfeed-pipes d d, connecting the different lamps. The said coupling isprovided with a stop-cock c', by means'of which the supply of oil may beout off from either or all of said lamps, the stop-cock c' being what isknown as a four-way cock.

D designates one of the lamps, having a chimney and base of ordinaryconstruction and provided with a wick tube or chamber E, that receivesoil at its lower portion and has inserted within it an asbestus wick e,that lls the said chamber and projects a suitable distance thereabove,which wick is not vertically adjustable. In Fig. 2thewick-chamber E isshown provided with perforations c e in its bottom and sides, and standsin a casing F, which has its bottom connected by a feedpipe f with thefeed-valve cylinder G. The wick-chamber E has secured around it near itsupper end 4the circumferential wire or beadf, that holds it inproperposition within the casing F. rlhe feed-valve cylinder G hasscrewed into a threaded opening in its base the vertical portion d ofthe corresponding feed-pipe d, and is provided with a central verticalhollow stem g, threaded at its lower end and engaged by thesimilarly-threaded valve-spindle H, the conical point h of which has aseat h in the upper end of the feedpipe d. The'feedvalve cylinder G is ashell of glass tted into the upper end or top plate I and the lower endplate or base J, the feedpipes d and f opening into the latter. The topplate I is provided with an air-opening t on one side of its stem g,which may be covered when necessary by the pivoted plate j, that can beturned over said opening.

K designates an overflow-tube, which is iitted in an opening in thebase-plate J, and the upper end of which stands at a suitable heightwithin the feed-valve cylinder. Should the oil rise above the upper endof said tube, it will ilown down therethrough and maintain its levelflush with the upper end of the same.

In operation the oil flows down by gravity from the reservoir A throughthe main feedpipe B, the flow being regulated by the cock 1J. 'lhence itpasses through a pipe d to the corresponding lamp D, which is at a lowerpoint than the reservoir, its course being through the pipe d into thefeed-valve cylinder and thence through the pipe f into the ICO easing'lf, where it. surrounds the lower part ol`thewick-chamber IC and entersto the wick through the perforations in said ehamber. The leed to thelamp is mainly regulated by the va'.ve or valve-spindle l'Lthough it isobvious that either the valve or the valve e may regulate the llow ofoil. As the lamp is always below the reservoir, the pipe fmust be alwaysfull ot' oil, as no vacuum eau form within it. The wiel; being ofineombustible material. always stands at the same height in thewielc-ehamber and absorbs oil through the perfor-ations e in saidChamber, the level of the oil in said Chamber being kept. at an equallevel by the drip-tube or overtlow-tube lx', and the feed-valve cylinderhaving` glass sides the height ot' oil therein can be at all timesobserved. 'lhe said easing might be dispensed with and thepipefeonneeted immediately with the bottom of the wiek-el1an1- berlil;but as this Construction is liable to give rise to leakage it ispreferable to retain the easing.

It is evident trom thelforegoing description that the lamps will be l'edregularly and equally, and will therefore give a steady light at alltimes.

Having' described my invention, I claim-n 'lhe combination, in a1amp,ofan elevated reservoir, a valve-chamber provided with a perforated tubeg, a valve therein, an airventvl', an overflow-tube, pipes Connectingsaid valve-chamber with the said reservoir, provided with Cocks, aeasing l1' for the lamp proper, communieating,` with the saidvalvechamber by a pipef', and the perforated wiektube sustained withinthe easing F, as specitied.

In testimony whereof I affix my signature in presence ot' two witnesses.

A LllCR'l G. All() DA NI IC l).

Witnesses:

ll. J. Ennis, FREDERICK M. ll ILL

